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Welcome to our centimeters/hour to miles/second (cm/hr to mi/s) conversion calculator. You can enter a value in either the centimeters/hour or miles/second input fields. For an understanding of the conversion process, we include step by step and direct conversion formulas. If you'd like to perform a different conversion, just select between the listed Speed units in the 'Select between other Speed units' tab below or use the search bar above. Tip: Use the swap button to switch from converting centimeters/hour to miles/second to miles/second to centimeters/hour.